Question

The average atomic mass of a sample of an element X is 16.2u. What are the percentages of isotopes 6X16 & 8X18 in the sample. Plzz answer fast

Answer 1

Answer:

let he one element Y because of will make as to solve easy

Explanation:

16.

X.

6.

16x + 18(100-x)/100=16.2

16x - 18x + 1800= 16.2×100

-2x + 1800 = 1620

-2x = 1620-1800

-2x = -180

2x= 180

x= 180/2

x or X=90%.

18

X or Y

8

18y + 16(100-y)/100 = 16.2

18y -16y + 1600 =16.2×100

2y + 1600 = 1620

2y =1620-1600

2y = 20

y or Y = 20/2

Y= 10%